Sets whether the progress bar will show text next to the bar.
The shown text is either the value of the #GtkProgressBar:text
property or, if that is %NULL, the #GtkProgressBar:fraction value,
as a percentage.
To make a progress bar that is styled and sized suitably for containing
text (even if the actual text is blank), set #GtkProgressBar:show-text to
%TRUE and #GtkProgressBar:text to the empty string (not %NULL).
Sets whether the progress bar will show text next to the bar. The shown text is either the value of the #GtkProgressBar:text property or, if that is %NULL, the #GtkProgressBar:fraction value, as a percentage.
To make a progress bar that is styled and sized suitably for containing text (even if the actual text is blank), set #GtkProgressBar:show-text to %TRUE and #GtkProgressBar:text to the empty string (not %NULL).